Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)
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2019
Authors
Muñoz-Fernandez, Lidia
Alkan, Gözde
Milošević, Olivera

Rabanal, Maria Eugenia

Friedrich, Bernd

Article (Published version)

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Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximu...m available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.
Keywords:
Ag/ZnO / sore-shell structures / ultrasonic spray pyrolysisSource:
Catalysis Today, 2019, 321-322, 26-33Publisher:
- Elsevier
Funding / projects:
- Autonomous Region Program of Madrid, Spain, MULTIMAT-CHALLENGE (ref. S2013/MIT-2862)
- Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology (RS-172035)
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-45020)
Note:
- Peer-reviewed manuscript: https://hdl.handle.net/21.15107/rcub_dais_4602
- Supporting information: https://hdl.handle.net/21.15107/rcub_dais_5973
Related info:
- Version of
https://hdl.handle.net/21.15107/rcub_dais_4602 - Referenced by
https://hdl.handle.net/21.15107/rcub_dais_5973
DOI: 10.1016/j.cattod.2017.11.029
ISSN: 0920-5861
WoS: 000451030700005
Scopus: 2-s2.0-85035353170
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Muñoz-Fernandez, Lidia AU - Alkan, Gözde AU - Milošević, Olivera AU - Rabanal, Maria Eugenia AU - Friedrich, Bernd PY - 2019 UR - https://dais.sanu.ac.rs/123456789/4591 AB - Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V. PB - Elsevier T2 - Catalysis Today T1 - Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP) SP - 26 EP - 33 VL - 321-322 DO - 10.1016/j.cattod.2017.11.029 UR - https://hdl.handle.net/21.15107/rcub_dais_4591 ER -
@article{ author = "Muñoz-Fernandez, Lidia and Alkan, Gözde and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, Bernd", year = "2019", abstract = "Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.", publisher = "Elsevier", journal = "Catalysis Today", title = "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)", pages = "26-33", volume = "321-322", doi = "10.1016/j.cattod.2017.11.029", url = "https://hdl.handle.net/21.15107/rcub_dais_4591" }
Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M. E.,& Friedrich, B.. (2019). Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). in Catalysis Today Elsevier., 321-322, 26-33. https://doi.org/10.1016/j.cattod.2017.11.029 https://hdl.handle.net/21.15107/rcub_dais_4591
Muñoz-Fernandez L, Alkan G, Milošević O, Rabanal ME, Friedrich B. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). in Catalysis Today. 2019;321-322:26-33. doi:10.1016/j.cattod.2017.11.029 https://hdl.handle.net/21.15107/rcub_dais_4591 .
Muñoz-Fernandez, Lidia, Alkan, Gözde, Milošević, Olivera, Rabanal, Maria Eugenia, Friedrich, Bernd, "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)" in Catalysis Today, 321-322 (2019):26-33, https://doi.org/10.1016/j.cattod.2017.11.029 ., https://hdl.handle.net/21.15107/rcub_dais_4591 .